1921660

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{389}}^1$

素因数の和:430

約数の個数: 48

約数和(自身を含む): 4586400

約数和(自身を除く): 2664740

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 190, 247, 260, 380, 389, 494, 778, 988, 1235, 1556, 1945, 2470, 3890, 4940, 5057, 7391, 7780, 10114, 14782, 20228, 25285, 29564, 36955, 50570, 73910, 96083, 101140, 147820, 192166, 384332, 480415, 960830, 1921660]

約数ペア:

[(1, 1921660), (2, 960830), (4, 480415), (5, 384332), (10, 192166), (13, 147820), (19, 101140), (20, 96083), (26, 73910), (38, 50570), (52, 36955), (65, 29564), (76, 25285), (95, 20228), (130, 14782), (190, 10114), (247, 7780), (260, 7391), (380, 5057), (389, 4940), (494, 3890), (778, 2470), (988, 1945), (1235, 1556)]